So, let me fill in the blank of "we trust each other so much we don't tell each others that we ________"

"we trust each other so much we don't tell each others that we wipe our asses with a X amount of toilet paper"

By that logic, if you don't tell your wife how you wipe your butt, does that mean it's a business partnership to you? Because I'm sure she trusts that you wipe afterward, but do you explicitly say how it happens? Do you announce it to her?

"Hey honey, I wiped my ass with 14 sheets of paper today. It was really soggy down there, on account of all that chili. I wanted to let you know because we're not business partners".